DeepSeek vs GPT in 2026: full comparison (price, performance, use cases)
Picking between DeepSeek and GPT depends on your use case, budget, and privacy constraints. Here's a factual, up-to-date comparison to decide in minutes.
Technical specs
| Model | DeepSeek | GPT |
|---|---|---|
| Vendor | DeepSeek | OpenAI |
| Reference variant | DeepSeek V3 | GPT-4o |
| Context window | 128K tokens | 128K tokens |
| Input price | $0.27 $ / 1M tokens | $2.5 $ / 1M tokens |
| Output price | $1.1 $ / 1M tokens | $10 $ / 1M tokens |
| Knowledge cutoff | 2024-07 | 2024-10 |
| Best for | Tight budget, high volume, code, mathematical reasoning. | Versatility, multimodality (vision/audio), image generation, vast ecosystem. |
Strengths of DeepSeek
- • Unbeatable price/performance ratio (~10× cheaper than GPT-4o)
- • Strong in code and mathematics
- • Open-weight model (self-hostable)
- • Fast and concise responses
Strengths of GPT
- • Native multimodal (text, image, audio, voice)
- • Built-in image generation (DALL-E)
- • Vast plugin and integration ecosystem
- • Fast streaming response time
Limits of DeepSeek
- • Data hosted in China (concern for EU enterprise use)
- • Limited multimodality vs GPT/Gemini
- • Weaker Western cultural context awareness
Limits of GPT
- • Smaller context window than Claude/Gemini
- • Sometimes shallow on deep analysis
- • Filtering occasionally over-restrictive on neutral topics
Which one should you pick?
Pick DeepSeek if…
Tight budget, high volume, code, mathematical reasoning.
Pick GPT if…
Versatility, multimodality (vision/audio), image generation, vast ecosystem.
Still undecided?
The best is to test both on a real question from your daily workflow. On Ask Aurel you can query DeepSeek and GPT side by side (Compare mode) for a few cents, no subscription, and judge by results.
Frequently asked questions
DeepSeek or GPT: which is cheaper?
DeepSeek is overall cheaper ($0.27 per 1M input tokens, $1.1 per 1M output) than GPT ($2.5 input, $10 output). The real cost depends on your input/output ratio: heavy output use widens the gap in favor of the cheaper one.
DeepSeek or GPT: which is better for code?
DeepSeek and GPT are both solid at code. The right pick depends on your stack and budget — test on a real task.
DeepSeek or GPT: which is GDPR-friendly?
Neither DeepSeek nor GPT is European. Both provide GDPR-compliant Data Processing Agreements (DPA), but data transits through the US (or China for DeepSeek). For full sovereignty, Mistral AI remains the European reference.
What's the context window for DeepSeek vs GPT?
DeepSeek accepts 128K tokens of context, GPT 128K. GPT has the larger window, which matters for analyzing long documents (books, dossiers, codebases) in one request.
How can I test both AIs without subscribing?
Ask Aurel gives you access to the 6 main AIs (Claude, GPT, Gemini, Mistral, Grok, DeepSeek) on pay-as-you-go, no subscription. Minimum top-up €10, each query costs a few cents, credit never expires. You can also compare AIs side by side with Compare mode.
Try both side by side
Ask Aurel gives you access to DeepSeek, GPT, and 4 other AIs from a single interface, pay-as-you-go. No subscription, top up from €10, credit never expires.
Try it now — 3 free questions